package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags="c端菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>>listResult(Long categoryId){

        //构造redis中的key,规则：dish_ + 分类id
        String key = "dish_" + categoryId;

        //插叙redis中是否有菜品数据
        List<DishVO> list= (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list!=null && list.size()>0){
            //存在，直接返回
            return Result.success(list);
        }

        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
        //不存在，查询数据库,将查到的数据放入redis中
      list= dishService.listWithFlavor(dish);
      redisTemplate.opsForValue().set(key,list);
       return Result.success(list);
    }
}
